It’s not really "up in the air" as far as Derpibooru is concerned; site policy is that screencaps of the movie are haram unless and until it gets aired on TV where anyone with a just-above-basic cable/satellite package can see it.

tl;dr: Since the movie is meant to be an actual product like the comics (but unlike the show, which is looked at as primarily a promotional thing), in addition to being managed by other companies, they’re likely to be a lot more strict on content from the movie being distributed, even after it’s been released on digital. On the other hand, once it’s released on broadcast/cable, it’ll be at a point where it might be okay. But ultimately it’s up in the air, and we don’t really know how that’ll turn out yet.